Columbia Banking System (COLB) Tax Rate (2010 - 2026)

Columbia Banking System has disclosed Tax Rate across 17 years of filings, most recently posting 24.71% for Q1 2026.

• Tax Rate for Q1 2026 came in at 24.71%, down 513.0% year-over-year; the trailing twelve-month figure through Mar 2026 was 23.74% (down 251.0% YoY), and the FY2025 annual result was 24.45%, down 128.0% from the prior year.
• Tax Rate came in at 24.71% for Q1 2026 at Columbia Banking System, up from 23.76% in the prior quarter.
• In the past five years, Tax Rate ranged from a high of 29.84% in Q1 2025 to a low of 19.33% in Q3 2025.
• The 5-year median for Tax Rate is 25.42% (2024), against an average of 25.31%.
• Across the five-year window, Tax Rate jumped 549 bps in 2022 and tumbled 618 bps in 2025, its largest moves.
• Columbia Banking System's Tax Rate stood at 26.17% in 2022, then retreated by 0 bps to 26.05% in 2023, then dropped by 3 bps to 25.39% in 2024, then retreated by 6 bps to 23.76% in 2025, then rose by 4 bps to 24.71% in 2026.
• The last three Tax Rate figures came in at 24.71% (Q1 2026), 23.76% (Q4 2025), and 19.33% (Q3 2025), per Business Quant data.